Functional Immune Treats Functional Immune Treats a complementary food for dogs and cats of all life stages. 500g Formulated to help support the immune system and promote overall health and well-being. Added beta glucans to help stimulate the innate immune response and aid immune defence. No added artificial colours & preservatives naturally preserved using rosemary extract. Freshly prepared duck 40%, freshly prepared chicken 24%, sweet potato 13%, potato, peas, vegetable protein, minerals, chicken gravy 1%, nucleotides 1%, cellulose, omega 3 supplement, also contains camomile and lavender.